Algorithms for Run-Time Terrain Deformation

For Air Force mission rehearsal in flight simulations, newly acquired target data may not match pre-existing terrain database that normally requires lengthy off-line processing. A run-time solution is proposed to correct the mismatch while maintaining the continuity of terrain and overall aspects of the database. The solution proposed is a correction function c(x,y) that is added to every terrain vertex in view. The corrections are made when each area block is retrieved, with the corrections to the adjacent area blocks considered to ensure continuity across block boundaries. To foster ultimate application with all of the existing real time software for simulation systems, the module will be developed for OpenSceneGraph and placed in the public domain.